does anyone know a script for auto-switching between a pool of seed-torrents with BT? I´d like to use my bandwidth most efficient as possible. Therefore I need that non needed seeds are automatically shut down and needed are started.

Would be a nice feature for BT too. BT could stop each x minutes a non-seeding torrent file and start up another randomly. If that torrent has no leechers its stopped either and another one ist started.